810 
INDEX. 
Cayley (A.). A Third Memoir on Skew Surfaces, otherwise Scrolls, 111. 
A Memoir on Cubic Surfaces, 231. 
A Memoir on the Theory of Reciprocal Surfaces, 201. 
Chambers (C.). On the Solar Variations of Magnetic Declination at Bombay, 363. 
Chick, development of the heart of the, 387. 
Chloride of nitrogen, experiments on the explosion of, 492. 
Chromosphere, solar, 430, 435. 
Church (A. H.). Researches on Turacin, an Animal Pigment containing Copper, 627. 
Compressibility of mixtures, 610. 
Continuity of the gaseous and liquid states of matter, 575. 
Copper contained in an animal pigment, 627 (see Church). 
D. 
De la Rue (W.), Stewart (B.), and Loewy (B.). Researches on Solar Physics. Heliographical 
Positions and Areas of Sun-spots observed with the Kew Photoheliograph during the years 1862 
and 1863, 1. 
Development of the heart of the chick, 387. 
Diathermometer, 640 (see Guthrie). 
Dredging expedition, results of, 701, 721. 
Duncan (P. M.) and Jenkins (H. M.). On Palceocoryne, a Genus of Tubularine Hydrozoa from the 
Carboniferous Pormation, 693. 
Dupre (A.) and Page (F. J. M.). On the Specific Heat and other Physical Characters of Mixtures of 
Ethylic Alcohol and Water, 591. — Specific heat, 591 ; heat of mixture, 604; boiling-points, 605 ; 
capillary attraction, 606; expansion by heat, 608; compressibility, 610. 
E. 
Equines, comparison of skeletons of, 535 ; remains of, from America, 559 (see Owen). 
Equus spelceus, 548 ; E. conversidens, E. tau, and E. arcidens, 559. 
Expansion of mixtures by heat, 608. 
Explosive agents, 489 (see Abel). 
F. 
Foraminifera from deep sea, 721 (see Carpenter). 
Fossil plants of Greenland, 445 (see Heer). 
G. 
Gallus domesticus, development of skull of, 755. 
Glass, determination of the index of absorption in various specimens of, 157. 
Gore (G.). On Hydrofluoric Acid, 173. — Anhydrous, 173; aqueous, 193. 
Greenland, fossil plants of, 445 (see Heer). 
Grubb (T.) and Robinson (T. R.). Description of the Great Melbourne Telescope, 127. 
Gun-cotton, explosion of, by detonating agents, 497. 
Guthrie (F.). On the Thermal Resistance of Liquids, 637. 
